Plenty of other countries have similar mechanisms, where the user is also not informed (because of a court order or similar). The US is certainly not the only culprit here, although they may or may not be the worst.
Australian resident with a UK passport checking in here. Australian's are fucked too. And we pretty much copy/pasted our new laws from the UK ones, so UK residents are as well. If Canada/New Zealand have not already passed equivalent laws or are not in the process of doing so, my paranoia about Five Eyes might be a little miscalibrated. But realistically, I suspect its more likely that I'm not paranoid enough, rather than too paranoid...